package com.chy.center.mapper;

import com.chy.center.pojo.UcenterMember;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author chy
 * @since 2020-10-30
 */
public interface UcenterMemberMapper extends BaseMapper<UcenterMember> {

    // 查询某一天注册人数
    Integer countRegisterDay(String day);
}
